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Finding the Fourth Proportional to 571.15, 856.11 and 375.53

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Solution

The fourth proportional to 571.15, 856.11 and 375.53 is: 562.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.15 : 856.11 = 375.53 : x
  2. Step 2: Convert to fraction form
    571.15/856.11 = 375.53/x
  3. Step 3: Cross multiply
    571.15x = 856.11 × 375.53
  4. Step 4: Simplify right side
    571.15x = 321,494.99
  5. Step 5: Solve for x
    x = 321,494.99/571.15
  6. Step 6: Final answer
    x = 562.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.